I wish our culture was better at honestly expressing our level of uncertainty, and being okay and encouraging of other people doing the same. Having widely-understood ways to say "based on what I know now, I think X, but this is a preliminary opinion and I am super-willing to adjust based on new arguments or evidence".

There are a ton of misguided analogies doing the rounds in crypto, which leads to unfounded entitlement, ignoring evidence. I wish crypto would focus on the things that have actually proven to provide value to people, rather than wasting more billions on things proven to have negligible demand (aside from bagholders).